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Archived Sun SysAdmin Articles
07 Apr 2015
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useradd with "-d localhost:...". [41787]
By Jeff Taylor

Jeff Taylor writes, "When creating Solaris users with useradd, I prefer using "-m" (make the directory) and specifying the directory with "-d localhost:...".

Here is a quick comparison:

# useradd -m -P "System Administrator" joerg1

# useradd -m -d localhost:/export/home/joerg2 -P "System Administrator" joerg2
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25 Feb 2015
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Technology Preview available for the Oracle Linux software collection library [41055]
Useful features to both developers and administrators

Michele Casey writes, "we are announcing a technology preview for the Oracle Linux software collection library. The software collection library provides useful features to both developers and administrators, by providing access to later versions of packages and libraries commonly used in development, such as Perl, PHP and Python.

Under the software collection library, these packages can be installed on existing systems, without overwriting the base packages delivered by the platform release..."
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13 Jan 2015
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New Enterprise Manager Release Delivers Adaptive Private PaaS [40342]
Oracle Enterprise Manager Cloud Control 12c Release 4

Yoav Eilat writes, "We are pleased to announce an update to Oracle Enterprise Manager Cloud Control 12c Release 4. The update is now available on OTN.

So what exactly is adaptive private PaaS?

Recent releases of Enterprise Manager have expanded capabilities around Platform as a Service (PaaS) delivery in your private cloud. In particular, the EM Cloud Management Packs have focused on two critical areas for Oracle customers: Database as a Service (DBaaS) and Middleware as a Service (MWaaS).

In this release, these PaaS capabilities have become more adaptive to complex, rapidly growing environments. Let's look at 3 areas where database and middleware users and managers will benefit..."
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05 Jan 2015
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15 Unix tricks to get your new year off to a good start [40295]
IT World, January 5th, 2015

Sandra Henry-Stocker writes, "The Unix command line provides numerous ways to make our work easier. Here are 15 'tricks' that I use often to make quick work of various tasks..."
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09 Nov 2014
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Unix: Catching up with Unix errors [39250]
By Sandra Henry-Stocker

Sandra writes, "Unix errors often seem cryptic and sometimes even obtuse, but they're actually well designed and useful. A little insight into the whys and hows of common error messages might help you appreciate not just error messages, but why you're bumping into them.

From time to time one of my students, when asked on a quiz what a command such as ifconfig does, will answer "displays 'command not found'". "No", I have to tell them, 'the ifconfig command isn't displaying that output. Either you misspelled the command or the executable isn't in one of the directories on your search path..."
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31 Oct 2014
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Collected advice on Unix CLI Design & Implementation [39045]
Suggestions on writing new CLI tools for Solaris

Alan Coopersmith writes, "Last week, a blog post Hints for writing Unix tools by Marius Eriksen made the rounds. It presented nine suggestions on what makes a command a good citizen of the Unix command-line ecosystem, especially for fitting into pipelines and filters.

This reminded me of a longer list of guidelines I recently gathered as part of our efforts to train new hires in Solaris engineering. I polled long time engineers, trawled the Best Practices documents of our Architecture Review Committee, cross referenced to the WCAG2ICT accessibility guidelines for non-web applications recommended by Oracle's accessibility group, and linked to our online documentation, to come up with our suggestions on writing new CLI tools for Solaris.

Since these may be useful to others writing commands, I figured I'd share some of them..."
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